Moving Users from Organizations to another Organization
You can Move users from an Organization to another Jira Service Management Organization following the steps
Select the Organization that you want to move users from
Select the Organization that you want to move users to
Select one or more users, or Select all
Click in “Move user” button, so the users selected will be copied to a new organization.
Note that you will not be able to move users from or to groups, only from and to organizations